Today i bought my first cyclocross bike, Cannondale superx-rival which will arrive 2-3 weeks later.

I'm plannig some updates on components and want to hear your experiences.
1-I plan to modify the stock trp euro-x brakes with trp 8.4 linear brake system. I've read about them, and know that they are much more powerful than the cantilever systems. (I'm using red shifters&calipers on road bike)
What do you think? Would you go for a change? At least, i need my brakes to be as strong as on my road bike setup.
2-Bike is equipped with cross specific Fulcrum cx7 wheelset. They look cool and strong but weight factor seems much for me.(1850g claimed)
I plan to buy mavic ksyrium elite wheelset which is strong enough and about 1570g. (I have ksyrium sl's on road bike and love them)
Will you have any other alternatives, which are light&strong?
3-Chainset ratios are 36/46 with a 12-26 cassette. I plan to change the bb30 gossamer pro crankset with a lighter option, maybe with compact chainrings and use by 12-32 rival or 11-36 xx cassette.
My crankset alternatives are sram force compact, fsa slk and fsa k-force. Both sram and fsa offers very light cranksets and i want to use this bb30 weight advantage.
My road bike has a standart chainset with a 12-27 cassette but i can't climb over %10-15 grades. I want to ride this cross bike over any hilly routes without any doubt.
4-Which tire width do you recommend? I will be riding mostly on rough tarmac and looking for 28c conti 4 seasons.. I just can't be sure about their comfort level as i'm between 28c-35c sizes.
I need a tire with an enough comfort level on rough tarmacs and nice puncture protection with a low rolling resistance

Here is the spec. list and need your advices please...

