Deductions & credits

I may be overcomplicating it, but should I may two amortization tables--one for the tax deductible part and one for the non-tax deductible part?  The prorating doesn't make sense to me because let's say i take $10,000 for a home reno and start paying that down and then in 3 years I take $5000 out for a vacation, for example, it's hard to prorate that, right?