The PIC's Timer 1 Oscillator on the T1OSI, T1OSO pins has absolutely *NOTHING* to do with its primary oscillator on the OSC1, OSC2 pins. See datasheet section 4.2 Crystal Oscillator/Ceramic Resonators for typical values for the capacitors from OSC1, OSC2 to Vss.

The actual capacitance can be calculated from the crystal manufacturer's specified load capacitance. In a Pierce oscillator the crystal 'sees' a load capacitance of the two capacitances to ground (at either side of it), effectively in series. If they are identical, the capacitance to ground must therefore be double the specified load capacitance. The actual capacitor value chosen must allow for the stray capacitance of the tracks, PIC pins and inside the PIC, so its usual to use the next lower preferred value. Its usually fairly non-critical (within a factor of two) unless you need the crystal frequency to be as close as possible to its nominal value.

For the regulator, consult its datasheet for the minimum capacitor values to use and any other constraints (e.g. minimum ESR). If there is more than 1" of track or wiring between the regulator's output capacitor and the PIC, or if the output capacitor is an electrolytic, a 0.1uF ceramic capacitor between Vdd and Vss at the PIC is recommended. If there is a significant length of wire between the reservoir capacitor fed by the bridge rectifier and the regulator, it should have a separate input capacitor >= its minimum recommended value.

The reservoir capacitor has to be big enough to keep the regulator input above its dropout voltage between consecutive peaks of the full wave rectified supply from the bridge. Q=CV and Q=It. t in this case is 1/100 second, and V is the maximum drop you can tolerate from the peak output of the bridge down to the regulator dropout voltage. You also need to allow for low mains input voltage, so assume that the secondary voltage will only be 90% of its nominal value for this calculation, or if using a measured no-load peak voltage from the bridge, you need to measure the mains voltage, anc scale the peak voltage from the bridge in proportion to the nominal voltage of your mains supply divided by its actual value, before applying the 90% factor to allow for brownouts.

Once you have capacitor values, its just a matter of finding a supplier and ordering them, but watch out for minimum order charges. If you have any doubts post a link to the distributor and their part numbers of the parts you have chosen to this topic and ask us to check them.