Pars, is it like this?
You have hard work ahead. ? The power must work below 35v (the preamp works at 24 volts really). I don´t think you have problems increasing the capacitance but the space is quite limited. I would try those Panasonic TSHA.
The most important advice. All the details about this amp are in the thread. Reading the threads with attention requires a little time but it solves most doubts.