My girlfriend & I are planning to go straight for a condominium and right after marriage. What is the most financially sound way of getting there & financing this purchase? (Loans, Investments etc.)

My simple advice: don't overstretch and watch out for the accrued interest if you are using CPF OA

There's alot of factors to this depending on your property value, loan eligibility & CPF OA funds.

I'm assuming you'll be looking to buy minimally a 2BR condo so lets estimate the value to be about $1.3mil, at maximum loan.

Downpayment wise (25%)

20% CPF OA limit - $260,000 (cash if not enough)

5% cash - $65,000

Legal fees - $2,500 - $3,000?

Valuer - $250

Stamp duties

First $180,000 at 1%
= $1,800

Next $180,000 at 2%
= $3,600

Next $640,000 at 3%
= 19,200

Remaining $300,000 at 4%. = $12,000

Upfront you'll need a total of about $365,000 readily available.

Taking a loan with the current interest rate environment of 1.3%,

repayment would be about $39,456 a year, about $3.3k per month excluding other running costs like utilities, condo maintenance fees etc.

The loan could be fixed maybe 2-5 years but after that you'll probably need to refinance or reprice unless you're ok with floating rates.

Investments to get to a condo? Depends on your time horizon of investing.

Investing to pay off your mortgage on your condo fast, plenty of available options out there so as long as your returns are able to beat the interest loan Rate. However if all you're going to do is leave money in the bank or if you expect that your returns are beneath the prevailing interest rates, better to just clear off the house ASAP.