Or am I jumping too far ahead because I may need to upgrade my digital source (CD or SACD player) first and find the amps for my Harbeth?Since all of your experience is with digital, it may be better to get that setup first, since you are familiar with the format.
Doing both together can be a headache. Analog has less dynamics, but other nice things going for it. Even someone that is a veteran with both, may have a hard time starting with new gear using both formats.