The Lord (ho Kurios). The Lord Jesus. Paul prays to Christ.
Make you to increase (humas pleonasai). First aorist active optative (wish for future) of pleonazō, late verb from pleon (more), to superabound.
And abound (perisseusai). First aorist active optative (wish for future) of perisseuō from perissos, old verb, to be over (common in N.T.). It is hard to see much difference between the two verbs.