Is it correct to use either present tense and present perfect tense after after?
Here's the sentence:
I borrowed his laptop but promised him that I would give it back later after I finish typing my essay.
I'm in a dilemma whether I should use present tense or present perfect. And since the construction is like a report, I mean I reported that I had borrowed his laptop bla bla bla... I also have a thought that I should use past tense.
Could you tell me the appropriate tense I should use? Also I hope you don't mind mentioning other alternatives (tenses that are probable).