Tin Roof Recommendation

[Midnitemo]

I have picked a tin roof as opposed to tiles for some of the same reasons on my soon to be erected workshop , gone for a pent as this gives me the best southerly orientation for the solar panels I plan to install , the roof will feed into an IBC at the south end of the workshop , I was initially concerned with the condensation/insulation issues but the roof has a drip tray and membrane to help with this , not sure what the harvest is likely to be of a 250sq ft steel roof but I'm hoping once the IBC fills up i'll be able to keep it fairly full , going to insulate the IBC too.