Translation based on Glossary (wish I had seen that before!):

"Leeze me on thy bonnie craigie!"
Dear to me is your beautiful neck.

"Weel, my babie, may thou furder!"
Well, my baby, may you succeed.

"Herry the louns o' the laigh Countrie"
Harry the lads of the low Country.

It was interesting to find that Lallans was traditionally used to represent the Scots language as a whole, which is why this Highland song is in the Lowland dialect. Thank you again for your help! I appreciate your kindness to an amateur and guest such as myself.