Just sharing my personal experience.
As you are using just basic indicators then amibroker will be enough for you.
As help for it, is easily available.
In India, every second trader have Amibroker.
Further, it depends on timeframe of candle.
If you use 1-2 min candle then go for certified data seller
but if plot 10+ min candle then simple linking Nest to amibroker will also serve the purpose.
Money saved will add to your profits.
All of above, costs not more than 5K (one time).
It all depends on what extent of precision you want in chart.
Normally Bid/Ask traders need highly accurate data.
Disclaimer: I myself use Amibroker 6.30 with Nest datafeed.
On chart I have simple indicators which shows same results if candle closes at 190.10 or 190.20
Costing prediction considered cracked version of amibroker.