Wolverine "Sweet Spot"

Hi all.

I've been avidly reading threads and watching vidoes on this site for the last few days and I'm only part way through the Wolverine build thread, so apologies if this question has been asked before (although, I couldn't find one).

I'm registered for the Wolverine 5th Group Buy for two sets of 2x E3-4 boards (including the optional boards), with the primary aim of replacing an aging, but recently re-capped (by me) Meridian 577 (200w per channel driving 8ohm Monitor Audio GR20 speakers). The second set of boards are an "insurance policy", in case I screw-up something on the first set.

So, to my question. Is there a "sweet spot" for the wolverine amp ? My current thoughts are going for the 200w design or perhaps easier (safer?) for a novice, the 180w with 64v rails. Also, given that I'll have a second set of boards, I have the option of selecting different components where applicable, to see how that plays out. Finally, the second set could be built as two mono blocks, rather than the dual-mono design I have in mind for the first set.

I'd appreciate any thoughts and advice on this.

Regards

Steve