I'd say 1.5 is about right for the poem and prós question and 2 for the litriocht bhreise. When you think about it, the poetry and pros are only worth 30 marks and the litriocht bhreise is only worth 40 marks, both less than half of what the essay is worth so I wouldn't go mad writing loads. If you have it prepared then go for it but there's a lot to do in Paper 2 so don't waste time writing more than you need to! Best of luck! :)
If you're wanting an A grade/ high B we were told to do about 2 pages for filiocht in total (this could be split up into a few different questions, so watch how the marks are allocated for each part), 2 pages for pros and 3 pages for litriocht bhreise. However, the quality is most important - don't go writing 3 or 4 pages of complete waffle if you can get a really good 2 page essay!
And just remember, altogether these three sections are only worth roughly 16/17% !