Well his idea is having a caster with a bow, not an archer with spells Baardvark.
Well gamewise you can practically do anything, you can play a dex 5 archer if you wanted, and yeah from level 14+ wayfarer will be good enough to pull you through any combat. Just make sure to buy all the skillbooks and attribute books from the teller of secrets every level up and preferably get her before you turn level 6.
I am a min/max type of player upto a certain point.
If you want to play a wayfarer regardless of how good/bad it is, then I would say just play it as you want it. I'm not trying to burst your bubble, however you ask for advice so you can get close to the perfect character you see fit, maybe just maybe... you should just play and experience. It's not like I had the perfect setup, talents and everything on my first playthrough. On the first playthrough I played on easy and took what I thought was good and just did my thing. After 3 playthroughs I'm kinda done with the game for now, so im trying to keep en eye on some keen mods.
So yeah if you want the wayfarer just grab what you think is good, and use your stats to fix up "holes" that your equipment can not fill, you will find enough rings and amulets (way too much even imo) that will have a ton of +1 stats on it, like con speed perception and some random other stuff, or amulets with dex int str per etc... so you can close to the gap enough to make it work for sure.
Just make sure that plan out what talents you want and plan accordingly to grab the prerequisites in time. Talents come on 1 3 7 11 15 19 (23) most likely you will grab 7 talents in total.
And you will have a total of 68 points to spend on abilities with lone wolf (49 without) and can devide 15 attribute points from 1-20 (you can get more if you go over 20, but roughly you will reach 20ish on your 1st playthrough, you will miss stuff even with perception 14, I am sure that you will forgot to look at a place here or there unless you use a walkthrough.
However just for completing the game and going 100%, yeah man build that wayfarer if you are fast and get teller of tales @ level 5 then you can even spend an extra stat point and 3 ability points every level (you do have to buy these books for roughly 12,5k gold each, lower if you have better bartering attitude charisma) However without rushing to it, you will be level 8-10 before reaching it still plenty of books to buy to grab the extra stats. You can trade in a talent for 10 ability points and 10 ability points for 2 attribute points. So with this info you should be able to do the math accordingly to what is appropriate for you. On average you probably use 5 talents, get to teller @ level 9 so you can expect to get atleas an extra 12 attributes for roughly 12x12,5k spread over level 9-20 and trading in talents will cost you the talent for the whole game but gets you another 2 per talent. so if the books all go to the wayfarer then he get an average of 16 attribute points more.
I'm pretty sure you liked this answer much better, you might have to do some math yourself and ofcourse try to synergize stats on items with how you are dividing them. You can craft some belts and rings that might be pretty decent till midgame and once you reach level 17 you can even craft rings and belts that grant +2 stats (although at that point there is pretty decent chance you're wearing better.)
Happy building!
Rashar.