Q: Hello 5i Team

I am reviewing global infrastructure / real asset closed end funds as a means to diversify into US/Global infrastructure companies. Two examples I could find on the Canadian Market are Brookfield Global Infrastructure Securities Income Fund (BGI.UN) and Middlefield Global Real Asset Fund (RA.UN).
Questions are:

1 - Which is the better choice BGI.UN or RA.UN?
2 - Any Canadian or US listed ETFs that I should be looking at?
3 - Any other Canadian Closed End Funds I should be looking at?
4 - Any US listed Closed End Funds I should be looking at?
5 - What is a reasonable MER for these products (BGI.UN is 1.25 % and RA.UN is 1.10 %)?
6 - What is the minimum assets under management (AUM) I should be looking at ( BGI.UN is +/- $102M and RA.UN is +/- $100M)?
7 - Any other items to review?
Thanks