I cast a Gealforce and an Asquith back to back on the Tay a few weeks ago. Being honest, both are wow rods!, however they go about it in different ways, while the Asquith is a Rapier the Gaelforce is a Broad Sword. For me it would be very hard to choose as both rods will more than get the job done in fine stylee, it's just how you'd like to go about getting that job done and maybe the extent of the job you want doing!.
For your circumstances I suggest at least looking at the Asquith, its certainly lighter in the hand and feels more middle to tip action, The Gaelforce is a lot firmer, robust, heavier in the tip and carries more weight, certainly more of a big river rod for big lines!- but not by much, its not like comparing a B+W Cairngorm to a Guideline Le Cei!.
Neither are cheap, let's be honest there, considering that I'd really suggest casting both and seeing what you think. Lines will also play a part too, for heads then the Asquith, for big heads and full lines, then the Gaelforce. Thats not absolute though, both rods will cope with either style but I do feel each rod had a bias even if only slight. Although I cast bigger rods length wise they'd both tremendous power and put a line a long long way.
I also agree with Bruino, the Asquith is an all day long rod, you might feel the pace with the Gaelforce.
The rods I cast belonged to the Spey O Rama winner this year and his line's were very well tuned for the rods and set up well which no doubt helped the distance and ease they were both cast with, but I kid you not I was close on 50yds with each rod and with a little time and acclimatisation I'd expect more distance to be available.
I know its not all about sheer distance, but when you back paddle to well within your capabilities its the ease a rod will deliver your every day casts for you which I think is a reasonable goal to achieve!.
Know they're a different rod, but my 11ft 9 Igniter and Airflo Scandi Compact are like that, it just cast's and go's and go's, wind or anything don't stop it, even bad hangovers and boots on the wrong feet won't hold that rod back it just delivers all ends up, and more than I am capable of asking for too- even politely.
Take your time here, there's a lot at stake for you to gain positively, but considering the brass a wise choice would be a great choice!.
Best of luck, Pedro.