It depends how much the lack of Flash is likely to annoy you as well. People can argue the case for and against Flash, but, right now, it's still noticably absent when you're browsing on iOS devices. It doesn't really bother me so much but for others it would.
If the wait is all you're bothered about then try just putting it to sleep. Most of the time mine is ready to go in 4-5 seconds inclusive of putting in a password. The thing I find more annoying with my laptop is that it's flat or nearly flat half the time I come to use it, whereas the iPad standby time (and battery life in general) is just amazing.
On the flip side, for general sofa surfing I sometimes prefer a laptop. Having the screen at a completely different angle from the trackpad (i.e. input) works better when flaked out half watching TV. Perhaps have both for a while and see what works for you.