I don't know what the right answer is, and I don't think anyone can be certain. If you've read the discussions there are some good explanations of what factors are likely to be important, but given that what works best, will in itself affect the system, I don't think it's wise to believe in this or that solution.
Different people are trying different approaches based on different priorities. For some profit, for others interests or skill, fun, curiosity etc.
Which things you choose to evaluate will also depend on your circumstances (means, connectivity, cost of power etc)
So how can anyone else tell you what's best!?
My advice is to be aware of what is important to you and take steps that are as mindful of that as possible, whether they work or not. For some that's small baby experiments and research to home in on a solution with low risk, for others it's lots of research and analysis before jumping in in a bigger way.
One thing I think may be important is to try and stay aligned with the ethos of the project, because I expect that however it starts out, David and the team will be determined to keep on that track. In other words, to ensure as many people as possible can benefit from all aspects (not just farming) and that the project is socially beneficial too (eg rewards energy & resource efficiency).
I realise my answers on this are a long way from the concrete solution you are seeking, but I hope I've explained why I don't feel able to give advice on that. I don't yet know what I'll be doing myself, but farming isn't my highest priority. I do want to do it, and I will, maybe to profit, but also very much to support the launch and most of all I think, just to be part of something marvelous and exciting. Also so I can, one day, offer more concrete suggestions!
Good luck. This is going to be fun