I get alot of scrolls lately that are level 7 and 8. My character can use them as a scroll, and I have couple of mages that could 'write' them. My question is, should I memorize these scrolls even though not a high enough level yet to use them OR should I use them as they are...and lose the opportunity to memorize them hoping that eventually I will reach a level when they can be of use. Most usually I need them sooner then later I am finding! Opinions please!

Definately write magic. However it really depends on the spell. If its good enough to warrant use in various situations, or looks like it has other uses, write it! However spells like Limited Wish and Find Familiar are'nt going to be used that often, so you shouldnt waste your slots on them. You can only scribe a few spells to your spell book and you dont want to waste them by copying useless spells.
Spells I'd scribe are spells like Abi-Dalzim's Horrid Wiliting or Death Spell or Mordekainen's Sword. Others are'nt all that worth it, though all are powerful.

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Why?

Some scrolls are quite rare(gate,maze,spell turning,abi dalzims,ect),so i'd be VERY careful which ones you use.Personally i would memorise them.