kcwong: I really disagree with you if you think you lose nothing by wishing for the scrolls of charging. Hmm... let me put this in practical terms. Suppose you have $1. You have the option of buying an item and selling it for $2 or you could wait to find that item and sell it for the same price. The catch is that while you KNOW that you will find that item, you just don't know when.
So, here's the end result:
1. You either end up with $1 -$1 + $2 = $2.
2. Or you end up with $1 + $2 = $3. But the problem with this one is that you don't know when you'll get the $2, just that you know you will.
I'm advocating that you go for option 2, because it's better for you in the long run since you essentially get one extra wish.
Your choice is all good if you know for sure you will survive that long. For most, when you get an early wish, the best option is to get what you want in your ascension kit right there and immediately. Some items are a must, and/or helps a ton if you have them early on.
I see it this way: Timing is very important.
You have an early wand of wish with unknown no. of charges.
1. You wish for 2 blessed scrolls of charging first.
1a. If the wand has 1 charge: Your net gain is 1 blessed scroll of charging + 1 wish of your choice immeidately.
1b. If the wand has N charges: Your net gain is 1 blessed scroll of charging, N-1 wish plus the whatever amount of charges you can get from the recharge, immeidately.
2. You wish for whatever you want.
2a. If the wand has 1 charge: Your net gain is 1 wish of your choice, plus a wand to recharge at unknown time later. If you don't have a bag, wand might go boom if shocked, or you will have to stash it and return later.
2b. If the wand has N charges: Your net gain is N wish. Wand must be protected same as 2a.
For most with imperfect skills and in the mercy of the RNGod, option 1 would make their character lasts much longer, with some popular choices such as drgaon scale mail, amulet of reflection, ring of conflict, artifact weapon, etc. Also most dangers in NetHack are best defended against by having the proper defense beforehand - better get Magic Resistance before stepping onto a polymorph trap.
If I get an early wand of wish, I'm going to use it all right there filling out my AK. More wand of wish later I will keep a few charges for emergencies.