orange sparkle is very, very good, and IMHO also I'd hang onto them.
As mentioned: for toms and kick a different head combination with careful tuning, and as for the snare, If the snare wires are bent, overstretched, or some are missing then they can cause problems in get a nice crisp pop. I like the snare wires to all be of even pressure and alignment against the reso head. The standard number of snare wires seems to be twenty which can often cause too much snare buzz for some peoples liking, so either cutting the snare wires off symetrically, which requires some care and good tools, or just buying a, say 16 strand snare wire can reduce the buzzy aspect. You might even want to go down to 12 strands or fewer depending on what works for you.
It can help if the reso head is in good order, which is especially important for snares I find. The tension placed on the wires is a factor too- some players like them very tight which almost dampens the reso head, but it does promote a pop. If you tune up a coated batter head, ambassador or more so a PS3 for instance, I've found I can get a very nice pop, especially with rimshots. Shallower snares, but particularly smaller diameter snares such as 13", 12", or 10" can give a really good poppy when used in conjuction with the methods previously described. So maybe the purchase of a 12" second snare would open up some more sound possibilities from the kit? But unless you snare shell is damaged* significantly you should be able to get the sound you want with some experimentation and work. *Ditto on the toms and bearing edges.
Also forgot to add- the clear plastic snare wire holders are better then the string because the string can interfere more with contact between the head and snares.
It's a very subjective area- what sounds good to you personally is "a good sound". But also depending on the application it can be crucial to tune to a listeners perspective, the distance depending the application.
But all these theories are given in detail on Youtube, etc.
Finally, drums are very versatile instruments, and I wouldn't blame the drums on the sound. Those drums you have are very cool, have alot of character, and nothing blows people away like an old "crappy" kit the sounds like a million bucks!