I understand that such gifts are exempt under both countries Tax Laws since it is a Gift to a relative - Sibling / Brother

WorldRemit specializes in remittances and smaller transfers. They're perfect for personal money transfers from the US of up to US$10,000 to India. Their rates are usually better than your local bank's and they offer more flexible delivery options than companies like PayPal, Western Union or MoneyGram.

If someone sends money to your bank account as a gift, it's usually their responsibility to ensure the correct tax is paid. However, any money landing in your account in exchange for goods and services then counts as income - so you'll need to fill out a tax return.
Is it necessary to inform the India IT Dept on such remittances.
If the gift value exceeds the value of Rs 50000 then it will be taxable for you and your wife as per the tax slab. and if your daughters are minor then it will be added to your income and will be taxed accordingly. He can transfer the money through his US account also.

It can be time consuming researching money transfer companies and comparing the best rate of foreign exchange. Our guide shows you which service has transparent fees, mobile apps and different delivery options to make your international money transfers easier.What bank details are needed to transfer money from USA to India value of us dollar in pakistani rupees
An alternative way to claim for tax relief is to claim for the Foreign Earned Income Exclusion. This is more commonly used by expats who earn income overseas - but to qualify, you must spend a minimum number of days outside the US each year, and you must be able to demonstrate ties to the country you earn income from.
According to the business overview included as part of the company's annual reports, Western Union offers businesses and individuals ways to send money and make payments globally. In 2006, the company ended its telegram and commercial messaging services to focus mainly on money transfer and payment services.
A) should we go for full 100 % as gift amount

There are no taxes charged to the sender or receiver for gifts to close relatives from the USA to India. However, other transfers will be subject to gift tax in the USA, and any amount over $700 dollars will be subject to income tax for the recipient in India.
It allows customers to receive and send cash worldwide at over 320000 locations across 50 countries and territories. Unlike most other service providers, Boss Revolution processes international transfers within minutes, making sending/receiving money convenient and hassle-free.

Hi Sangeeta,