putting it back together

[FAKKY]

Had the trans out and did my first rebuild ....
Swapped the oil pan to FBODY
Did the wiring harness.

That was all over 6 months probably ......
Now I need to put it all back toghetehr ..... trans on engine .... engine and trans in truck.

Any tips ?
Thinking things like

* making sure I dont miss a bolt
* Doing in correct sequence
* accessories like starter after TRANS is on engine
* Ensure all grounds are regrounded - although most probably done at engine harness time
* Alignemnt to rear for driveshaft.
* Height and positioning generally.
*TQ Convertor properly seated - how to do and tell
* Whatever Im not thinking of
Its a 57 Suburban and 4l60e trans to a LQ4.

I had heard somewhere need to make sure the trans pan is flush with the engine before you mount trans so you dont crack the pan ..... well .... it mostly looks flush/square ..... but there is a little ridge in middle behind flexplate.