If you believe in your work. If you are happy with the first 50 pages and the manuscript is completed. Look for an agent! Go for it. What’s the worse they can say, no? No doesn’t mean the work isn’t good. It just means it isn’t what they are looking for.
The editing services are nice and all but as ostarella wrote, if you have trusted beta readers who are honest in their opinions, good and bad then that should be all you need to get the work out the gate.
Now, getting trusted beta readers… that is another conundrum.