Here's what you do since you're worried.
Spend:
~$50 on a flipper rebuild kit
~$20 on a coil sleeve kit
~$25 for sling shot rebuild parts
~$100 for LED's
~$250 for both GIOCD and LEDOCD boards
~$200 to have a person do all the work (that number HIGHLY subject to change)
You have a minty flipper on your hands and should be turn key player for many years to come.