Just a few tips. You can't go back to Rivertown once you move on to wastelands so pack everything you need with you.
You can bring more stuff if you wear items that add to your strength. As you already know the more str your charactor has the more it can carry. What I did is used some silver str charms in some 3rd rate equipment. These are charms I did not need for my top line equipment. But you ask won't the weight of the extra eqipment offset the gain from the str charms? No it wont, unless its 400 weight armor plate. The best items to use for this are light weight 4 or 5 charm slot items with no other mods, such as 4 charm light boots, light belts, I already had two 5 charm ammies so I used a 4 charm ammy to fill with str charms. Not sure if all classes get the same benefits but my warrior can lift 200 more pounds per every 10 str increase if I remember correctly. Its close to that anyway. Be sure to save before you do this to experiment.
What to bring-
All your top rate equipment of course, plus your 2nd rate equip and if you may have enough str for your 3rd rate equip, at least weapons.
Portable bed or 2 haystacks. There are fixed beds near where the store is and close to the front lines but thats it. The portable bed looks nicer than what you will have here and it has no weight.
Teleporter stones - Bring both, you can find a set here but why waste time looking for them.
Comforts of home- Any items you want to make your living space yours. Don't get carried away as weapons are more important.
Toothbrush- just kidding
Chest- There are no chests here though you can use a sack of grain or a barrel to store your items. A chest looks nicer but they weigh 400 so this is optional.
You can arrive overburdened. However, you have to walk a fair distance to get to a safe zone. If you just go east instead of your you will only have very light resistance and you can go invisible also not to have anything follow you.
A few Potions- Maybe 20 restoration and 20 stamina. You can buy potions right away and potions add to your weight so only bring so many. Don't bring super restorations or Super stamina as the regular ones will restore all your points already.
Charms and misc. items.