The amp should be fine for practicing. The 34" scale necks can be too long for some people and there are basses with shorter necks, but even if you eventually decide to get another bass you should keep the Kent. They were the instruments that you would see in J.C. Penney, or Sears catalogs many years ago. There was one on EBay with a buy it now price of 590.00, which is more than what most beginner basses cost.
I am not sure of what could help you with the fingering difficulties other than practice, maybe someone else who reads this thread will know some tricks. I have long fingers and have difficulties with 6 string necks that have a smaller radius (where the strings are closer together).
_________________
The Rhymin' Red Rover, that's what they call me,
Too old for a sailin', too young fo' the sea;
Set sail fo' a sunset, to a land that is free,
I'm the Rhymin' Red Rover, and that's where I'll be.