Hi Chris
The transaction costs of buying and selling property are high. Legal fees of at least €1k each way. Furnishing and maintenance. Estate agent's fees on selling of at least €1k.
While you have the property, you will have to pay management charges, property taxes, water charges etc. You would not be long using up the €5k a year in annual rent.
If you want to buy a house when you finish studying, it could take you some time to sell the apartment. No, you can't use the apartment as a deposit.
As you will be studying for the next few years, you should keep the cash available in case you need it.
A deposit account would be the best option. If you want to take a bit of risk in the hope of higher returns, you could buy around 5 blue chip shares. But over a two or three year period, these could fall significantly and you could lose a big part of the deposit on your house.
You seem to live in Waterford and want to buy in Roscommon? In general, it's a bad idea to buy an investment property in an area which you don't know. There may well be problems with that estate or apartment block which locals would know about but you would not. If the tenants don't pay their rent or want a light bulb changed, are you going to drive from Waterford to sort it out?
2 : Would i be missing out on some kind of Tax breaks / First time buyers schemes if i buy it?
I don't think so, but the government is always meddling in the property market, so it's quite possible that first time buyers might have some incentive at some future stage. Another good reason for you not to own property.
Brendan