The F7 would be the one to use for that. The F1 isn't deep enough to take them vertically; you could put both of them in horizontally though. For that matter, if you don't have the D3s gripped, you could probably do fine with the F802 and 720-230 insert. I use that a lot when travelling in tight quarters. Disclaimer - I use Canon gear; the Canon 70-200 2.8 IS fits in either the F7 or F802 vertically when attached to a body up to a 5D or 1D3.
Last edited by Jon; 04-23-2009 at 02:01 PM..