if you have if you have free electricity and 10k cash
how much you will invest in bitcoin mining and when ?? right now or later and why
Pick some ASIC for ALL money and start
mining right now, so you have a few month
before block halving happen and other miners
add more hashpower to network...
Going all in to start is a horrible idea. Going from no miners to mining 10k worth of equipment... huge growing pains. Start off smaller and add gradual with starting. The electrical wiring, cooling, networking, psu's, etc. Just a lot of thing he would have to learn all at once and if your talking about 10k worth of gear... i argue it's to much for most on jumping in first miner.
Starting with 1 S7 and trying it even is better then jumping in to big at once. All or nothing is not a good way to invest in general.