One warning (and I know that we've discussed this before - the meaning of "preempt" is ambiguous). The Alert Pamphlet says:
If it is your partnership style to routinely...preempt with very weak (frequently worse than Qxxxxx) suits...the opponents must be pre-Alerted.
So, if your "4-10, 5+" are always KJTxx and up, you're probably ok. If you will open with a weak 2 on a bad suit as well, it is best (if maybe not required) to Pre-Alert this.
When I play EHAA, I both Pre-Alert (because EHAA, at least, has to - I've opened 3H on T98643 systemically) and Alert the weak 2s (especially 2C), but that's because of the "unexpected strength and shape" rules for natural bids (nobody would expect 86432 KJT Q8532 -- for a 2S call, nor AKQT87532 -- Q95 3). So - have fun :-).
I have, in a somewhat silly light opening system, played 1-7 weak twos. Perfectly legal - not very nice.