My $0.02:
The cartridge has enough power to work out to about 150 yards on medium game. A 30-30 is good to about 200 yards for your average hunter, but it fires heavier bullets than the 7.62x39, so a bit of range reduction is in order. I think limiting yourself to 100 yard shots is unnecessary unless you're taking a very poor shot angle.
I would put the scope on it. Personal preference, though.
The issue with this chambering is the ammo. The CZ 527 Carbine in 7.62x39 has a 0.311 nominal bore diameter. This means it's fine for shooting the ammo designed for SKS and AK rifles, and the SP bullets available in steel-cased varieties seems to be perfectly adequate for deer. There are widespread reports that the HP varieties of this ammo are too fragile and will fragment inside deer rather than penetrate. Consistent accuracy in this caliber is usually less than many people like unless you're purchasing brass-cased S&B or other ammo specifically marketed to hunters, and this comes at a price premium.
If you reload, make sure you use bullets suited to .311 bores and not the .308 bullets that some manuals recommend.
FWIW, I've never heard of anybody who purchased this rifle that didn't love it.