Is my donor area good for a hair transplant?

Based on a photo alone it is difficult to comment on your situation.You didn’t include your age-age is very important in planning an appropriate treatment strategy.Your donor area appears about average however you have a very large area of loss and likely the demand exceeds the supply.However,this needs to be determined in a direct consultation with an experienced Hair Restoration surgeon.

Based on your photograph, it appears that there is enough hair for hair transplantation.  Evaluating the donor area varies from person to person and an in person consultation is often the best.  During that time the following can occur:-Trichoscopy- Look at the donor area and examine the follicular density-Scalp readiness- Some donor areas may have more inflammation or other hair or dermatologic issues which may need to be addressed-Hair loss pattern- The surgeon can assess to see if retrograde alopecia is likely-Calculation- A calculation is often made to determine the number of donor hairs available

Without knowing important details such your age, hair texture/density, and your family history, it appears that you are headed for a Norwood Pattern 6-7.  By definition, this leaves you with limited donor hair. The best donor hair is coarse, curly, dense in someone with a lower Norwood pattern. This doesn’t mean that some type of hair restoration is out of the question for you.  However, you should look for an experienced and honest physician to guide you through realistic expectations.

An in person interview with a hair specialist to evaluate your donor area. Just from the picture you have donor area to harvest in some capacity. .  

You have a Class 7 pattern which means that your donor area is small considering that your need it large. Get your donor density measured so that you know how many grafts you have to use for the hair transplant