Now, you should scout around for a loan if you are taking one. If they are offering interest absorption scheme during construction, then they have a list of tied-up banks for you to choose from.
Once you more or less firm up the bank, I believe the next thing then should be to sign Setia's Letter of Offer for any financial package that they offer you.
Once you sign that, you lock in the property price and any discounts given.
You also need to apply for a loan within 7 days, and sign the Sales and Purchase agreement within 14 days
You may need to go over their JB offices to sign the SPA and bank loan agreement in the presence of the lawyer who can explain the terms to you.
BTW, I also purchased Cascadia during their phase 1 launch. But in my case, I sign all the above documents at one go.
For Setia Tropika around that budget, only serviced apartment is available - Sky Peak Residences....and maybe limited units of Sky Gardens Residences .
Of course, you can go for resale too.