I gave an up-vote to @Kathleen K Bonner for noting the need to change "I'll" to "I would". 'Will' (or its contracted form) shows certainty something is going to happen. 'Would' should be used when something is still a hypothetical idea. See definition 2a in this M-W definition of 'would'.
I would prefer 'permanently' rather than 'for good'. The latter is a common enough idiomatic expression which means the same thing, but generally (if one exists) you should prefer to use a single word which has the precise literal meaning you need. 'Permanently' seems exactly right for this situation.
However, I doubt I'd use either of those. May I suggest something? Along with about 90% of speakers of English, one thing which would significantly improve the quality of your writing is to always ask this question first when you have a sentence which feels awkward: have I chosen the BEST verb for this sentence.
The beauty of English compared to most other languages is the huge variety of verbs it has which can convey subtle variations of meaning with just one word choice. I keep thesaurus.com permanently open in my browser when writing for that reason. If you can say exactly what you want with just one word, why not do so.
For your situation, I would choose one of the following:
I think I would enjoy living there.
I think I would enjoy retiring there.
I think I would enjoy settling there.
I think I would enjoy moving there.