Giving up glass cannon is most likely in 999/1000 situations the wrong thing to do.
Int users with perception are not very good either since it does not synergize very well, they require speed and later con equal to speed. Perception is a stat you should ignore unless you play an archer, the stuff you miss is not worth it and if you already know where the secrets are you can just sommon a spider (they have pretty high perception). Not sure what you expect to get out of perception 14 but other then thay you can find more rubies and diamonds it is not like you will suddenly find legendary loot. So lootwise perception is neglectible, with 2 characters you don't need more then 6 rubies either and you can find atleast 3 in chapter 1 which can be spotted with the summon spider.
However like I said before if you are an INT class then you want to have a staff since that is more INT which is more damage, lower cooldowns. Archer/Ranger/Marksman is just the worst choise to make into a hybrid.
If you want to get it to work you will need to grab marksman 5, because you want quickdraw, you will need to tons of points into your elemental schools.
If you pick up a bow/dex midgame then you will start of with pretty "bad" chances to hit and relative high costing auto attacks, making your spells 999/1000 allways the better choise to use.
However talents I would consider for spellcaster+bow are: Lone wolf, Bully, Glass cannon, Quickdraw and they all lead to being an archer with magic for backup, the other way is not impossible but just a lot worse. If spells are your main thing then there is no need for a bow since it makes your spells worse, with glass cannon as a mage it is highly likely that you get 18 AP/turn @ level 10. since all you need to spreat it out on is int,con,speed. 18AP with a mage means that stuff will get blasted to bits with a focused mage build, if you equip a bow, you have less int, which means less damage and without quickdraw 2 auto-attacks cost 8AP which is 2AP more then the 6AP costing "standard" caster damage spells like blitzbolt,flare,ice shard,posion dart. A focused archer uses 3AP per shot and can therefore rival a mage in terms of damage around level 10 and a few levels later the damage from the mage does not even come close to that of an archer.
Basicly what I am saying is Archer with backup mage spells, yes it is ok, Mage with a bow is a nay nay imo, because of the immense anti-synergy between the goals and aspects of the two "classes". IF you spread it out over 5/6 stat choises you end with a mediocre character being able to pull of a lot of tricks where a focuses archer or mage would just excell in there area of expertise.
You are thinking of dropping Glass Cannon and that make the character even more out of sync. since then it has a pretty small AP pool and once again when comparing it to a a focused build would mean the focused build would end up obliterating the hybrid. As a "mage" you use Glass cannon for setups that will have it's use in the same round, like rain+blitzbolt+lightingbolt (or frost spells that freeze) or you start of with oath+wildfire on your melee or archer. As an archer you would just CC the whole battleground with an array of special arrows, or you end up killing eveyrthing in sight by sneaking+auto-attack (assuming you have oath of descration+Guerillia, there is not much that does not feel the pain...)
You just want to much on 1 character, if you really want it, use a cheatengine or watch a video of how to unlock teller of secrets @ level 4/5 so you can grab more stat books. But understand that if you spread it to thin, you will become a jack of all trades, master of none, which in real life is a good thing, in the videogames it rarely is.
If you like the spells then stick with a mage and ignore perception, otherwise grab an archer, throw him full of spells and 8 int and enjoy.
With kind regards,
Rashar.
