Have you thought of corydoras? They are particularly fond of bloodworms and I have found them to be slightly more entertaining to watch than bristlenose plecos. I have a full-grown bristlenose and the only time I see it is in the evening when it finally ventures out.
Also as Fishy314 mentioned you definitely need more neons. I would recommend at least 5-6 individuals as they are a schooling fish and will be happiest and more confident in a school.
I would advise at least a 20 gallon tank if you are going to have a bristlenose, betta and neon tetras. Bristlenose get quite large, and can produce quite a lot of waste so you will also need a filter with the biological capacity to deal with that.
I am not familiar with Pakistani loaches, but going by what I have just read, they appear to grow between 140 – 160 mm and prefer to live in groups. The recommended tank size from one of the more reputable information sites, seems to be one that is in the 4ft range. So definitely bigger than a 10 gallon.