Good work. It will be fine when you turn the key. Just remember to prime it all. Before you start it. It does cost quite a bit when you add it all up. Best not to look at what you spend haha
Put the piston at tdc and have it in gear with the wheels on the floor. Put compressed air down the spark plug hole and it will hold the valves in place with out the dropping into the bore
Welder and a grinder bit of crafting and you will have 4wd. Just easyer to buy one and use that then you get the running gear without the messing about