Last I heard, we don't want any more (we have 3 now) B744 BCF's (converted freighters)...I'm sure we would take B744F's, but I'll even say that we are done with the B744s and would move to B747-8s for any future airframe acquisitions...
BTW, our last flight with the B747-200/300 fleet was this week...we had 'em for 19 years and they served us well. They set us up nicely for the move to the B744...how many three-year old companies can order 12 B744 (and options for a further 12)? The only way we could have done that was because of the B747 Classics.
Good luck to those trying to get to this company...it has been a good ride. AFAIK, it looks like a pretty safe bet for the short to medium term...
Long term? Ask me when I retire if I made the right move...