Any question answered...

Get the frameset, you won't get a better fork headset and seatpost new for £100

Frameset mean you got the headset, seat post and seat clamp altogether (beside the fork), for £100 more I think it's a pretty good deal.

I've just done the same thing. Take into consideration that the frames use a proprietary headset, which I didn't realise until after the frame had arrived. That was another £15 on top. I also bought some carbon forks seperately, which although cheap brought it up to around the same £199 price.
If you think the forks from Dolan are worth £199 - £15 for headset - £15 for seatpost then I'd say go for the frameset. I know I would if I was to buy again, and just sell the included Dolan/Alpina forks.

I'm considering selling my 58 pre cursa as it won't be on a track until next year (missed all the basic sessions this year) and I've got a feeling it's too hard for roads around me. I've ridden it round the block once, will give it a proper go this weekend.

That's that then. Cheers peeps!