Possible F1 competition?

I have run a few competitions on here for the Six Nations and the golf majors and have been thinking about a format for the F1 season. Just wondering if people would be interested and to get some feedback on the format.

The idea is that you pick two drivers for each grand prix and get the points they earn in the race. To stop people picking say Vettel and Hamilton each week, you would only be able to pick a driver once in the first 10 races and once in the final nine races. I was maybe thinking about making the 19th race double points too.

Selections would have to be made before qualifying or you would have a penalty of -5 for the first 'infringement' and -10 for the every time then on.

The first race is still a month away and keen to see what people think and/ or suggest.