Just bought most of the bits and pieces to build a Chime (and a Clarinet and some Cymbals), but a couple of things weren't available and had to go for alternatives. Hoping someone might let me know if I have chosen badly!?

P11423CT-ND 0.01uF 2kV, now obsolete. is “490-4240-ND - CAP CER 10000PF 1KVDC E3 RAD” at 1kv ok instead?
478-3195-ND 47pF 50V, for C502 comes up as "CAP CER 1.0UF 50V 20% RADIAL", so I got “490-3741-ND - CAP CER 47PF 50V C0G RADIAL” instead as it matches the schematic (i think). is this the right part for C502?
2SC3942 for Q402 is now obsolete. They sent me P2"2SC3503FSTU-ND - TRANSISTOR NPN 300V 100MA TO-126", which I'm guessing isn't ok?
NJM78M08FA for U400 is out of stock, and they offered “LM7808CTFS-ND - IC REG 1A POS VOLT 3TERM TO-220” instead, but current output is 1A instead of 500ma. Should I keep hunting?
Lansing weren't real keen to even figure out what the shipping was, so will be busy in the garage with some exotic woods instead

and figuring out how to facilitate the knobs on the front..