I would recommend finding someone who makes you feel deeply at peace when you speak to them. They should also try to rule out mental illness or other causes for your woes.

I was raised Catholic and I know that Catholic exorcisms are rarely performed. And honestly, a full blown exorcism is seldom needed.

How many people participate depends on the situation. I have done them alone with the subject or have had the family who is effected involved at other times. The key is that if it is a person who is infected, they need to truly want to be cleared and the must have faith that God will deliver them. Sometimes this is accomplished in the course of the work.

Some take weeks where others take only an hour. Every situation is different.

Make sure whoever you hire is compassionate and not just flaming your fear to make as much money from you as possible.

They should know what to do with the entity once they remove it so it doesn't come back. They should instruct the subject to fortify their connection with God and their protection to ensure against a relapse. Family members and those close to the subject should also be protected during and after the ritual.

Unfortuately all flowers tend to wilt in hot places. A rose and Carnations will hold up better than Ranculus or other delicate flowers. Most professional florist will use professional products that help the flower survive it hot conditions. When choosing a florist ask the right question. Do you use the professional products to help the flower survive? Which flowers are more delicate?