You need to clear the €15k car loan and there will be costs involved to buy your new PPR so you should be keeping at least €25k back for this.
That leaves you with €50k as a deposit and requiring €545k of a mortgage.
CB Lending limits:
Your base salaries are €170k.
Your total borrowing would be €681k (136+545)
Your LTI is 4.0, well above the 3.5 limit
Your are also below the 10% deposit but you could probably meet this by depleting your savings (bad idea)
One of the properties will need to be furnished which is not factored in above.
CGT:
I'm assuming you are sitting on a large gain for your current PPR. All of this existing gain starts to attract CGT if it becomes a rental. This can significantly impact the return on your property and is a one of the main reasons why keeping existing PPRs as rentals makes little sense
Income:
You are estimating 36k gross rent
Gross yield of 5.5% is not great
But you will have costs, let's say €6k (interest and expenses)
You are in the higher tax bracket so the €30k profit is roughly €15k net
Cost of borrowing:
So many don't understand this but you are,in effect, borrowing on your new PPR to retain your old property as a rental. So you have to factor this into your net income.
You would otherwise be mortgage free if you didn't try to keep this property so the entire mortgage is a cost to you.
€545k at 3% is €16k so your net return is negative. It is costing you money to keep it and the interest rate may be higher than 3%
You are taking all the risk for a rental that is not profitable and is accumulating CGT on existing gain. You also don't meet the lending rules for LTI or LTV.
It would be a really really bad idea to keep this as a rental.
If you really want to be a landlord then sell your PPR, buy the property you want and then look at BTL's that are much cheaper but have better gross yields.