Hi Johny, belated welcome aboard filipino UK

As you now understand, bringing your wife to UK for settlement without you being able to meet the current income requirements will mean having £62.5k in savings. Don't forget that after the initial 30 months that visa will require renewing at basically the same income/savings levels to ensure continuation for a further 30 months until ILR

Looking at all the issues you need to 'smooth', may I suggest you make a quick search here in the forum for the so-called EEA route.
You mention the opportunity to reside in Spain for a few months with paid employment.
That would surely represent the best option for you based on the information you've shared.
A least give it serious consideration. The initial and ongoing costs and paperwork are hugely less onerous with the time to British Citizenship being just the same.

My advice would be to follow the EEA path