oil seals

Putting back together my engine halves and am looking to replace all the seals. After looking on the forum it seems like this is the best kit to purchase cause apparently cheaper ones are known to leak...

I have been looking every where for a Complete oil seal kit for my 73' tx650 and I am in need of some help. I found this on ebay https://www.ebay.com/i/363178151307?ul_noapp=true let me know what you guys think, or would recommend.

What is the consensus on whether to coat or not coat the oil seals with __insert favorite case sealant__ prior to setting the cases together and torquing everything down? I'm at the stage with my XS1 engine that I'm ready to button it up, however, I'm torn with whether I should or should not...