Wiring starter with my swap

[aod92]

I searched this question and couldn't find my answer. My truck is a 67. When I wire up my ls starter I was going to run a hot directly from the battery to the bigger lug on the starter, and the purple wire from the original harness/ignition to the small lug of the starter. Should this work?

Also do I run a constant hot to the lug on the back of the alternator?

Im getting real close to starting this thing and it seems like these little things are keeping me up at night thinking about them lol. This forum has been very helpful and I can't thank you guys enough!