You're not feeling any effects the first day with test enanthate except placebo. Check back around the third week or so.
Test does boost appetite to some degree. For me it's not an extreme amount, but I can put more food down with more test.
As for using the AI, that's a personal decision. The trend these days seems to be that most guys use one throughout their cycle. Some do endorse that theory that excess estrogen somehow boosts gains. I'm not really sure, I have not read any science to confirm or disprove it...I just don't like getting bloated and moody so I use an AI. I like knowing that the weight I gain (though definitely more modest without the water) is mostly lean mass.
If you're going to go that route, (not using a SERM or AI until symptoms present) you need a good SERM on hand in case you start experiencing gyno. First sign of itchiness/puffiness/soreness, you jump on it. An AI will not work fast enough. It will take care of the estrogenic effects such as water retention, but it takes some time. Gyno is generally permanent once it forms, that's why you have to nip it fast. Read the sticky if you don't understand the difference between SERM's and AI's.