A friend of mine who is on a tight budget for his first home is also considering this package. Just pass by Jurong point and saw that they have a mini-showroom setup. Its actually quite cosy, but might be a bit small for the conventional HDB size. I think their designers should be able to accommodate to your HDB size accordingly though. Starting from $9k plus I think its pretty good value.
Can check out mothership news here on it: https://mothership.sg/2021/01/ikea-planning-studio-jurong-point/