I took too much on my first tour. That was remedied though by mailing stuff home. You really don't need much and especially if credit card touring you don't need much.

BTW, I find that for most items including the bike, inexpensive to moderately priced stuff is fine and in some cases I even prefer it. My rule is that if it is expensive AND heavy I rule it out regardless of how functional or durable it is. If it is expensive and substantially lighter while still being functional and reasonably durable I consider it despite the cost. That said most of my stuff is inexpensive.