Just don't forget that at low speeds two strokes don't have a lot of compression,and by taking the decompression valves out and putting in spark plugs,will add to the compression which in turn allows the engine to rev harder which is not a good thing as it will over rev.
Just be careful,maybe put the spark plugs in and turn by hand that will certainly let you know.I just wouldn't recommend starting it with them in.I know people have do it for years and a lot of those engines I've seen fail,I believe due to that.
