You are planning to buy a commercial property without taking any legal opinion from an experienced lawyer which is not advisable since you may not know the hidden legal issues involved n in it.
You are talking about the agreement and the recitals therein.
The agreement will be drafted by the document writer or a lawyer properly as per the circumstances and the instructions of both the vendor and the buyer, hence you may approach one for this purpose.
As far as the existing tenant, if you want to continue with this tenant, you may either continue with the same terms and conditions or you may have to get the present lease agreement terminated by your vendor and you can enter into a fresh lease agreement with the conditions stipulated therein.
If the tenant is not willing to enter into any fresh leas e agreement then you can ask the vendor to deliver vacant possession of the property you desire to purchase.
Since your vendor is a company and not an individual, you may have to ensure that the company has passed resolution to this sale of property with the approval of the board of directors and the shareholders and that they have complied with the proper formalities as stipulated in the Company's act.
You can buy the property in the individual's name or in the name of a company by following the formal procedures for a company to purchase the assets.
You take the assistance or guidance of a local advocate for this deal so that you don't suffer from any legal hassle in future by committing any error now.