Hey Marcelo,
Your 30" track COULD be sufficient for your boat provided it is in the right location for ONE of these sails... Either the 135% OR the 150% depending on where the track is...
I highly doubt that it would give you enough range to properly trim a 135% AND a 150% jib.
It is hard to say much without actually seeing the sails at work on your boat.
Proper sail trim depends on the specific sail (cut, shape, etc.) and the conditions (especially with a furler as they can adopt a strange shape under load when not fully unfurled...), as well as the location of the cars, AND the location of the track itself on the boat.
I've read a bit on the subject and found that Ivar Dedekam's short & sweet book "Sail & Rig tuning" nicely illustrated the basic points.
There are MANY discussions on the web, but many are confused and contradictory. It is all Physics, but there seems to be all sorts of opinions... The books help keep the focus on the topic succinct & to the point.
The right answer inevitably depends on the conditions... Wind direction, wind intensity, and intended course relative to this. As well as The sails, sheet geometry and the boat... it is not a very hard subject - just one that takes a bit of skill and 'art' as it depends on many variables.