So I guess you've got background in chords having played guitar and bass for a number of years. A few points to note:
1. Depending on how you learned guitar - if you learned it like most people (chords), you'll know your chords by the pattern of your fingers on the fret. That will be significantly different from playing a piano - at least in your mind. If you learned by reading notes and sees notes in your mind, then piano may be slightly easier.
2. If you have good chord background, the main skill you have to pick up is skill and technique. Going for some form of lessons is the easiest way to go about this.