after u sign the snp wait for the lawyer to sent the snp for stamping, at the same time chase the bank to release the proceed usualy the time frame is 3 months + 1 month as extension. One the bank release the payment, the developer or seller have to release the house to you within 4 days. If seller fail to release the house to you due to unforseen circumstances, you can charge them interest 10% per annum and sue them for specific performance.
The lawyer will also ask for money to do the transfer of name and ask for payment from u. Usually freehold house is quite fast, i heard some staff in the lawyer office mention that nowadays leasehold transfer of name is less than 2 weeks it depend on the lawyer whether they want to help u speed up the process while freehold should be faster. When they say 3-6 months for the transfer of name, your file actually is sleeping on the lawyer table.

Once you get your snp copy, you can apply for renovation of the house permit. Once you get your permint n  you receive your house key, you can start your house renovation,after that moved in anytime u find fit. Remember to connect water n electric supply before the renovation, those contractor need electric to do their work. The water is use to check if there is any leaking of the toilet.

weekends added, but public holiday not added....

check ur s&p, it is stated there