[soulpatch]

I would just remove the small piece of glass in section one and have that be one large area. The skimmer will get what it needs to so the bottom being open isnt really a problem. Use some hang on sock holders or look into the rottertube (I would say socks though).

I agree with moving the last baffles over but be careful how narrow you make it. If you want your heaters and such in there you will want to test fit everything. Also look into the measurements of some of the more common pumps these days as well. If you want to upgrade pumps in the near future you dont want to have to drain a sump and move baffles. And if you are not going to run a manifold do not forget about your reactor pump(s)...