Good morning!!! Ask arround to find a trusty engine/machine shop in your area.. Yah gotta be near the Ottawa Valley or close thereabouts... Did you put oil into the cylinders after you had the low readings??? Try and get a spoonful into each spark plug hole and see if your readings go up or if they stay the same... Staying the same means valves and going up readings means rings... Either you do a leakdown test or get the above trusty shop to do it... Make your decision after that as to exactly how much you would spend, what exactLY you want the engine to accomplish... Sit down with the engine shop person of your choice and discuss exactly exactly what you want and how much you want to spend... Keep it all under one roof ... so to speak as if you go to 4 different spots, if something goes astray (wrong) they will have built in excuses as to "well we did not tell you to do that or buy that or go that way". Do it right the first time and yah won't have to go back and do it over... Maybe the shop will have a great deal for you sitting on the shop floor for a great price with a guarantee / warranty???
Lotsa people will give their own ideas and some are great, but yah gotta start with a good base or all the heads / cams / intakes / carbs ain't a gonna do you right if you start off with a "wheezer"
Don't spend a dime until you do the above, for your own sake!!!