Hi,
From someone who did there first season in the ss this year I would say that limiting what you spend on the car would be a good move, as the biggest improvement will be yourself.
I'd say that the argument for lowering to 1700cc in a isn't an issue. A 1600cc won the championship last year, and a 1600cc won class a this year.
I'm a firm believer in the target time system. On a couple of events this year I was the only car in the class, without a target time I wouldn't have had anything to race against or aim for.
I agree that b1's would help "on the day" but last year would have been more of a struggle financially for me if I had to fork out for more expensive rubber.
In all, my first season was brilliant, only negative being i only managed to get to 5 events. The buzz of racing is really addictive and something that you can't get from a track day or driving on the road. All people involved are helpfull and happy to talk from a wealth of experience on what could be a way of improving. I'd recomend the sprint school to anyone wanting to compete, for advice on lines and car control from experienced drivers if nothing else.
Next year I'll be back, hopefully to go quicker! Look forward to seeing everyone then.
Chris