Tier 2 visa application - Arrival date and address in Uk

[Almeera]

Hello,

Had a query while filling out the visa application, the part where they ask you
1- Do you know where you will be staying in the UK
2- Date you plan to arrive in the UK

For the first question - i don't know the exact address of where i'll be staying as that will be decided after my visa has been approved. Is it okay to mention the address of my employer (office) and then explain this in the "extra details" section.

The Second question - My work start date was 14 Feb and my CoS expires 02 May. What should i write as my expected arrival date? Would 10th April be a good option?

Thanks!