if you can afford an ID and the cost of custom made cabinet then of course is better since the cabinet carcass can be cut to size and custom made your counter top

if you can or want to DIY to save cost then getting one from ikea is a good choice, but you need to make sure you know how to deal with the extra spaces where your cabinet cant fit in

【淘宝】https://m.tb.cn/h.UyKuZwU?tk=JLZadJYjpjM CZ0001 「黑金钢304纳米不锈钢水槽厨房洗菜盆加厚大单槽嵌入式洗碗池台下」
点击链接直接打开 或者 淘宝搜索直接打开

You can try other brand from taobao, basically you need to look for SUS304, nano coated sink, usually is black or grey, get the grey one better and won't look dirty easily, 3mm thickness, more than 19cm depth, get undermount type of sink if possible

Accessories is depends on what you need, you can always get it separately in the future, most of the sink in local is overpriced because they import from China