Yes, you did good. Someone said twice the value, but it's more like four times, as that is a 2nd generation gun, all parts by Uberti, not a mixed bag, and it was finished and assembled by Iver Johnson with a fine degree of workmanship.
Check GunsAmerica to see what the going price is for the 2nd gen, you will see how well you did.
The 3rd gen has the Sam Colt Signature, and compared to what you got, they are junk. Assembled by a company in Brooklyn, from parts by several vendors, ill fit and finished. The only nice thing about the 3rd gen is the color case hardening.
Suggest a 380 diameter ball over a Wonder Wad and 20 to 24 gr of fffg GOEX. You might want to replace the nipples with TRESO, and use Remington #10 caps. Look at these websites for nipples and balls, etc.
http://www.ozonemountain.com/catalog1.htm and
http://thunder-ridge-muzzleloading.com/.
These guns shoot high, like 9 inchaes at 15 yards. If you don't want to install a new higher front sight, you'll have to learn where to hold for your point of impact.
You got what is probably the finest repro cap & ball ever made, and at a price to make a grown man jump up and down and sing.